Dear Hector, Indeed, it's a limitation of the "Transfinite Volume" constraint implementation: conformity is guaranteed for recombined (hex) meshes; for tetrahedral meshes you need to specify the corners of the transfinite interpolation by had so that the boundary triangles match - and this is limited to the "non alternate" cases.
Christophe > On 1 Sep 2018, at 00:06, Hector Gabriel Espinoza Román <[email protected]> > wrote: > > Hello: > > I am meshing a cuboid without recombination in surfaces or volumes. > > I use Transfinite AlternateLeft Surfaces with Transfinite Lines with odd > number of nodes so I obtain a bi-symmetric surface mesh with all triangle > elements without all nodes on the boundary of the surface. Then I define the > Transfinite Volume and call <Mesh 3;> > > The volume gets meshed but some surface elements do not coincide with the > volume elements' faces. This gives me problems afterwards when I define > boundary conditions over surfaces and the solver checks if that boundary > element is the face of a volume element. > > Attached is a simple script with many combinations which do not work as I > expect. I would expect to get either all tets or all prisms with at least one > surface with all triangles so I can join that to a fully unstructured pure > tet volume. Only one method tested works but produces tets, hexas and > pyramids. > > Sincerely, > > Ing. Héctor Espinoza, MSc, PhD > Universidad Tecnológica de Bolívar > <gmsh-3d-structured-transfinite-alternate.geo><gmsh-3d-structured-transfinite-alternate.geo.opt.back>_______________________________________________ > gmsh mailing list > [email protected] > http://onelab.info/mailman/listinfo/gmsh — Prof. Christophe Geuzaine University of Liege, Electrical Engineering and Computer Science http://www.montefiore.ulg.ac.be/~geuzaine Free software: http://gmsh.info | http://getdp.info | http://onelab.info _______________________________________________ gmsh mailing list [email protected] http://onelab.info/mailman/listinfo/gmsh
